Manu Prakash is a distinguished figure in the realm of bioengineering, best known for his groundbreaking work with a primary focus on developing novel solutions to address complex challenges in biology and healthcare. In this presentation he shares the award-winning Foldscope, an optical microscope that is assembled from simple components, including a sheet of paper and a lens and cost less than one USD to build. It is a part of the “frugal science” movement which aims to make cheap and easy tools available for scientific use in the developing world.